jschoubben
5795f4d230
Declares amd-ucode and intel-ucode, the drop-in /etc/mkinitcpio.conf.d/mesh-microcode.conf, the initramfs script and mesh-kernel-initramfs.service; kernel_boot answers the running revision and whether the images were built with the drop-in. Tests: 1977/AC1-AC5. Builds: L1, L2, L3, L4, L5 (issue 1977 note 2)
37 lines
1.4 KiB
Bash
37 lines
1.4 KiB
Bash
#!/bin/sh
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# The initramfs images as the mesh builds them (module kernel, novox/hq issue 1977). Run by
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# mesh-kernel-initramfs.service:
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#
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# initramfs apply [<the microcode drop-in> [<this module's state> [<mkinitcpio file>]]]
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#
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# `apply` builds every image again (mkinitcpio -P) when the drop-in differs from the one the images were last built
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# with, kept in the state as `initramfs-built`, and records the drop-in only after mkinitcpio succeeded. Later
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# kernel upgrades build the images through the distribution's own hook, with the drop-in in place. The arguments
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# are only for the module's tests.
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set -eu
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dropin=/etc/mkinitcpio.conf.d/mesh-microcode.conf
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state='${dir:state}'
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[ $# -ge 2 ] && dropin=$2
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[ $# -ge 3 ] && state=$3
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[ $# -ge 1 ] && [ "$1" = apply ] || {
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echo "usage: initramfs apply [<drop-in> [<state directory>]]" >&2
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exit 2
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}
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[ -f "$dropin" ] || {
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echo "initramfs: $dropin is not there, so the images cannot be built with the microcode hook" >&2
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exit 1
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}
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if [ -f "$state/initramfs-built" ] && cmp -s "$dropin" "$state/initramfs-built"; then
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echo "initramfs: the images were built with this drop-in, as it was"
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exit 0
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fi
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if ! mkinitcpio -P; then
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echo "initramfs: mkinitcpio failed; nothing recorded, the next start tries again" >&2
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exit 1
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fi
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cp "$dropin" "$state/initramfs-built.new"
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mv "$state/initramfs-built.new" "$state/initramfs-built"
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echo "initramfs: the images are built with the microcode drop-in"
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